diff options
Diffstat (limited to 'fs/ncpfs/ncplib_kernel.c')
| -rw-r--r-- | fs/ncpfs/ncplib_kernel.c | 1355 |
1 files changed, 1355 insertions, 0 deletions
diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c new file mode 100644 index 0000000..e4eb5ed --- /dev/null +++ b/fs/ncpfs/ncplib_kernel.c @@ -0,0 +1,1355 @@ +/* + * ncplib_kernel.c + * + * Copyright (C) 1995, 1996 by Volker Lendecke + * Modified for big endian by J.F. Chadima and David S. Miller + * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache + * Modified 1999 Wolfram Pienkoss for NLS + * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info + * + */ + + +#include <linux/config.h> + +#include "ncplib_kernel.h" + +static inline void assert_server_locked(struct ncp_server *server) +{ + if (server->lock == 0) { + DPRINTK("ncpfs: server not locked!\n"); + } +} + +static void ncp_add_byte(struct ncp_server *server, __u8 x) +{ + assert_server_locked(server); + *(__u8 *) (&(server->packet[server->current_size])) = x; + server->current_size += 1; + return; +} + +static void ncp_add_word(struct ncp_server *server, __le16 x) +{ + assert_server_locked(server); + put_unaligned(x, (__le16 *) (&(server->packet[server->current_size]))); + server->current_size += 2; + return; +} + +static void ncp_add_be16(struct ncp_server *server, __u16 x) +{ + assert_server_locked(server); + put_unaligned(cpu_to_be16(x), (__be16 *) (&(server->packet[server->current_size]))); + server->current_size += 2; +} + +static void ncp_add_dword(struct ncp_server *server, __le32 x) +{ + assert_server_locked(server); + put_unaligned(x, (__le32 *) (&(server->packet[server->current_size]))); + server->current_size += 4; + return; +} + +static void ncp_add_be32(struct ncp_server *server, __u32 x) +{ + assert_server_locked(server); + put_unaligned(cpu_to_be32(x), (__be32 *)(&(server->packet[server->current_size]))); + server->current_size += 4; +} + +static inline void ncp_add_dword_lh(struct ncp_server *server, __u32 x) { + ncp_add_dword(server, cpu_to_le32(x)); +} + +static void ncp_add_mem(struct ncp_server *server, const void *source, int size) +{ + assert_server_locked(server); + memcpy(&(server->packet[server->current_size]), source, size); + server->current_size += size; + return; +} + +static void ncp_add_pstring(struct ncp_server *server, const char *s) +{ + int len = strlen(s); + assert_server_locked(server); + if (len > 255) { + DPRINTK("ncpfs: string too long: %s\n", s); + len = 255; + } + ncp_add_byte(server, len); + ncp_add_mem(server, s, len); + return; +} + +static inline void ncp_init_request(struct ncp_server *server) +{ + ncp_lock_server(server); + + server->current_size = sizeof(struct ncp_request_header); + server->has_subfunction = 0; +} + +static inline void ncp_init_request_s(struct ncp_server *server, int subfunction) +{ + ncp_lock_server(server); + + server->current_size = sizeof(struct ncp_request_header) + 2; + ncp_add_byte(server, subfunction); + + server->has_subfunction = 1; +} + +static inline char * + ncp_reply_data(struct ncp_server *server, int offset) +{ + return &(server->packet[sizeof(struct ncp_reply_header) + offset]); +} + +static inline __u8 BVAL(void* data) +{ + return get_unaligned((__u8*)data); +} + +static __u8 + ncp_reply_byte(struct ncp_server *server, int offset) +{ + return get_unaligned((__u8 *) ncp_reply_data(server, offset)); +} + +static inline __u16 WVAL_LH(void* data) +{ + return le16_to_cpu(get_unaligned((__le16*)data)); +} + +static __u16 + ncp_reply_le16(struct ncp_server *server, int offset) +{ + return le16_to_cpu(get_unaligned((__le16 *) ncp_reply_data(server, offset))); +} + +static __u16 + ncp_reply_be16(struct ncp_server *server, int offset) +{ + return be16_to_cpu(get_unaligned((__be16 *) ncp_reply_data(server, offset))); +} + +static inline __u32 DVAL_LH(void* data) +{ + return le32_to_cpu(get_unaligned((__le32*)data)); +} + +static __le32 + ncp_reply_dword(struct ncp_server *server, int offset) +{ + return get_unaligned((__le32 *) ncp_reply_data(server, offset)); +} + +static inline __u32 ncp_reply_dword_lh(struct ncp_server* server, int offset) { + return le32_to_cpu(ncp_reply_dword(server, offset)); +} + +int +ncp_negotiate_buffersize(struct ncp_server *server, int size, int *target) +{ + int result; + + ncp_init_request(server); + ncp_add_be16(server, size); + + if ((result = ncp_request(server, 33)) != 0) { + ncp_unlock_server(server); + return result; + } + *target = min_t(unsigned int, ncp_reply_be16(server, 0), size); + + ncp_unlock_server(server); + return 0; +} + + +/* options: + * bit 0 ipx checksum + * bit 1 packet signing + */ +int +ncp_negotiate_size_and_options(struct ncp_server *server, + int size, int options, int *ret_size, int *ret_options) { + int result; + + /* there is minimum */ + if (size < NCP_BLOCK_SIZE) size = NCP_BLOCK_SIZE; + + ncp_init_request(server); + ncp_add_be16(server, size); + ncp_add_byte(server, options); + + if ((result = ncp_request(server, 0x61)) != 0) + { + ncp_unlock_server(server); + return result; + } + + /* NCP over UDP returns 0 (!!!) */ + result = ncp_reply_be16(server, 0); + if (result >= NCP_BLOCK_SIZE) + size = min(result, size); + *ret_size = size; + *ret_options = ncp_reply_byte(server, 4); + + ncp_unlock_server(server); + return 0; +} + +int ncp_get_volume_info_with_number(struct ncp_server* server, + int n, struct ncp_volume_info* target) { + int result; + int len; + + ncp_init_request_s(server, 44); + ncp_add_byte(server, n); + + if ((result = ncp_request(server, 22)) != 0) { + goto out; + } + target->total_blocks = ncp_reply_dword_lh(server, 0); + target->free_blocks = ncp_reply_dword_lh(server, 4); + target->purgeable_blocks = ncp_reply_dword_lh(server, 8); + target->not_yet_purgeable_blocks = ncp_reply_dword_lh(server, 12); + target->total_dir_entries = ncp_reply_dword_lh(server, 16); + target->available_dir_entries = ncp_reply_dword_lh(server, 20); + target->sectors_per_block = ncp_reply_byte(server, 28); + + memset(&(target->volume_name), 0, sizeof(target->volume_name)); + + result = -EIO; + len = ncp_reply_byte(server, 29); + if (len > NCP_VOLNAME_LEN) { + DPRINTK("ncpfs: volume name too long: %d\n", len); + goto out; + } + memcpy(&(target->volume_name), ncp_reply_data(server, 30), len); + result = 0; +out: + ncp_unlock_server(server); + return result; +} + +int ncp_get_directory_info(struct ncp_server* server, __u8 n, + struct ncp_volume_info* target) { + int result; + int len; + + ncp_init_request_s(server, 45); + ncp_add_byte(server, n); + + if ((result = ncp_request(server, 22)) != 0) { + goto out; + } + target->total_blocks = ncp_reply_dword_lh(server, 0); + target->free_blocks = ncp_reply_dword_lh(server, 4); + target->purgeable_blocks = 0; + target->not_yet_purgeable_blocks = 0; + target->total_dir_entries = ncp_reply_dword_lh(server, 8); + target->available_dir_entries = ncp_reply_dword_lh(server, 12); + target->sectors_per_block = ncp_reply_byte(server, 20); + + memset(&(target->volume_name), 0, sizeof(target->volume_name)); + + result = -EIO; + len = ncp_reply_byte(server, 21); + if (len > NCP_VOLNAME_LEN) { + DPRINTK("ncpfs: volume name too long: %d\n", len); + goto out; + } + memcpy(&(target->volume_name), ncp_reply_data(server, 22), len); + result = 0; +out: + ncp_unlock_server(server); + return result; +} + +int +ncp_close_file(struct ncp_server *server, const char *file_id) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, 0); + ncp_add_mem(server, file_id, 6); + + result = ncp_request(server, 66); + ncp_unlock_server(server); + return result; +} + +int +ncp_make_closed(struct inode *inode) +{ + int err; + + err = 0; + down(&NCP_FINFO(inode)->open_sem); + if (atomic_read(&NCP_FINFO(inode)->opened) == 1) { + atomic_set(&NCP_FINFO(inode)->opened, 0); + err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle); + + if (!err) + PPRINTK("ncp_make_closed: volnum=%d, dirent=%u, error=%d\n", + NCP_FINFO(inode)->volNumber, + NCP_FINFO(inode)->dirEntNum, err); + } + up(&NCP_FINFO(inode)->open_sem); + return err; +} + +static void ncp_add_handle_path(struct ncp_server *server, __u8 vol_num, + __le32 dir_base, int have_dir_base, + const char *path) +{ + ncp_add_byte(server, vol_num); + ncp_add_dword(server, dir_base); + if (have_dir_base != 0) { + ncp_add_byte(server, 1); /* dir_base */ + } else { + ncp_add_byte(server, 0xff); /* no handle */ + } + if (path != NULL) { + ncp_add_byte(server, 1); /* 1 component */ + ncp_add_pstring(server, path); + } else { + ncp_add_byte(server, 0); + } +} + +int ncp_dirhandle_alloc(struct ncp_server* server, __u8 volnum, __le32 dirent, + __u8* dirhandle) { + int result; + + ncp_init_request(server); + ncp_add_byte(server, 12); /* subfunction */ + ncp_add_byte(server, NW_NS_DOS); + ncp_add_byte(server, 0); + ncp_add_word(server, 0); + ncp_add_handle_path(server, volnum, dirent, 1, NULL); + if ((result = ncp_request(server, 87)) == 0) { + *dirhandle = ncp_reply_byte(server, 0); + } + ncp_unlock_server(server); + return result; +} + +int ncp_dirhandle_free(struct ncp_server* server, __u8 dirhandle) { + int result; + + ncp_init_request_s(server, 20); + ncp_add_byte(server, dirhandle); + result = ncp_request(server, 22); + ncp_unlock_server(server); + return result; +} + +void ncp_extract_file_info(void *structure, struct nw_info_struct *target) +{ + __u8 *name_len; + const int info_struct_size = offsetof(struct nw_info_struct, nameLen); + + memcpy(target, structure, info_struct_size); + name_len = structure + info_struct_size; + target->nameLen = *name_len; + memcpy(target->entryName, name_len + 1, *name_len); + target->entryName[*name_len] = '\0'; + target->volNumber = le32_to_cpu(target->volNumber); + return; +} + +#ifdef CONFIG_NCPFS_NFS_NS +static inline void ncp_extract_nfs_info(unsigned char *structure, + struct nw_nfs_info *target) +{ + target->mode = DVAL_LH(structure); + target->rdev = DVAL_LH(structure + 8); +} +#endif + +int ncp_obtain_nfs_info(struct ncp_server *server, + struct nw_info_struct *target) + +{ + int result = 0; +#ifdef CONFIG_NCPFS_NFS_NS + __u32 volnum = target->volNumber; + + if (ncp_is_nfs_extras(server, volnum)) { + ncp_init_request(server); + ncp_add_byte(server, 19); /* subfunction */ + ncp_add_byte(server, server->name_space[volnum]); + ncp_add_byte(server, NW_NS_NFS); + ncp_add_byte(server, 0); + ncp_add_byte(server, volnum); + ncp_add_dword(server, target->dirEntNum); + /* We must retrieve both nlinks and rdev, otherwise some server versions + report zeroes instead of valid data */ + ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); + + if ((result = ncp_request(server, 87)) == 0) { + ncp_extract_nfs_info(ncp_reply_data(server, 0), &target->nfs); + DPRINTK(KERN_DEBUG + "ncp_obtain_nfs_info: (%s) mode=0%o, rdev=0x%x\n", + target->entryName, target->nfs.mode, + target->nfs.rdev); + } else { + target->nfs.mode = 0; + target->nfs.rdev = 0; + } + ncp_unlock_server(server); + + } else +#endif + { + target->nfs.mode = 0; + target->nfs.rdev = 0; + } + return result; +} + +/* + * Returns information for a (one-component) name relative to + * the specified directory. + */ +int ncp_obtain_info(struct ncp_server *server, struct inode *dir, char *path, + struct nw_info_struct *target) +{ + __u8 volnum = NCP_FINFO(dir)->volNumber; + __le32 dirent = NCP_FINFO(dir)->dirEntNum; + int result; + + if (target == NULL) { + printk(KERN_ERR "ncp_obtain_info: invalid call\n"); + return -EINVAL; + } + ncp_init_request(server); + ncp_add_byte(server, 6); /* subfunction */ + ncp_add_byte(server, server->name_space[volnum]); + ncp_add_byte(server, server->name_space[volnum]); /* N.B. twice ?? */ + ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ + ncp_add_dword(server, RIM_ALL); + ncp_add_handle_path(server, volnum, dirent, 1, path); + + if ((result = ncp_request(server, 87)) != 0) + goto out; + ncp_extract_file_info(ncp_reply_data(server, 0), target); + ncp_unlock_server(server); + + result = ncp_obtain_nfs_info(server, target); + return result; + +out: + ncp_unlock_server(server); + return result; +} + +#ifdef CONFIG_NCPFS_NFS_NS +static int +ncp_obtain_DOS_dir_base(struct ncp_server *server, + __u8 volnum, __le32 dirent, + char *path, /* At most 1 component */ + __le32 *DOS_dir_base) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, 6); /* subfunction */ + ncp_add_byte(server, server->name_space[volnum]); + ncp_add_byte(server, server->name_space[volnum]); + ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ + ncp_add_dword(server, RIM_DIRECTORY); + ncp_add_handle_path(server, volnum, dirent, 1, path); + + if ((result = ncp_request(server, 87)) == 0) + { + if (DOS_dir_base) *DOS_dir_base=ncp_reply_dword(server, 0x34); + } + ncp_unlock_server(server); + return result; +} +#endif /* CONFIG_NCPFS_NFS_NS */ + +static inline int +ncp_get_known_namespace(struct ncp_server *server, __u8 volume) +{ +#if defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) + int result; + __u8 *namespace; + __u16 no_namespaces; + + ncp_init_request(server); + ncp_add_byte(server, 24); /* Subfunction: Get Name Spaces Loaded */ + ncp_add_word(server, 0); + ncp_add_byte(server, volume); + + if ((result = ncp_request(server, 87)) != 0) { + ncp_unlock_server(server); + return NW_NS_DOS; /* not result ?? */ + } + + result = NW_NS_DOS; + no_namespaces = ncp_reply_le16(server, 0); + namespace = ncp_reply_data(server, 2); + + while (no_namespaces > 0) { + DPRINTK("get_namespaces: found %d on %d\n", *namespace, volume); + +#ifdef CONFIG_NCPFS_NFS_NS + if ((*namespace == NW_NS_NFS) && !(server->m.flags&NCP_MOUNT_NO_NFS)) + { + result = NW_NS_NFS; + break; + } +#endif /* CONFIG_NCPFS_NFS_NS */ +#ifdef CONFIG_NCPFS_OS2_NS + if ((*namespace == NW_NS_OS2) && !(server->m.flags&NCP_MOUNT_NO_OS2)) + { + result = NW_NS_OS2; + } +#endif /* CONFIG_NCPFS_OS2_NS */ + namespace += 1; + no_namespaces -= 1; + } + ncp_unlock_server(server); + return result; +#else /* neither OS2 nor NFS - only DOS */ + return NW_NS_DOS; +#endif /* defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) */ +} + +static int +ncp_ObtainSpecificDirBase(struct ncp_server *server, + __u8 nsSrc, __u8 nsDst, __u8 vol_num, __le32 dir_base, + char *path, /* At most 1 component */ + __le32 *dirEntNum, __le32 *DosDirNum) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, 6); /* subfunction */ + ncp_add_byte(server, nsSrc); + ncp_add_byte(server, nsDst); + ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ + ncp_add_dword(server, RIM_ALL); + ncp_add_handle_path(server, vol_num, dir_base, 1, path); + + if ((result = ncp_request(server, 87)) != 0) + { + ncp_unlock_server(server); + return result; + } + + if (dirEntNum) + *dirEntNum = ncp_reply_dword(server, 0x30); + if (DosDirNum) + *DosDirNum = ncp_reply_dword(server, 0x34); + ncp_unlock_server(server); + return 0; +} + +int +ncp_mount_subdir(struct ncp_server *server, + __u8 volNumber, __u8 srcNS, __le32 dirEntNum, + __u32* volume, __le32* newDirEnt, __le32* newDosEnt) +{ + int dstNS; + int result; + + dstNS = ncp_get_known_namespace(server, volNumber); + if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber, + dirEntNum, NULL, newDirEnt, newDosEnt)) != 0) + { + return result; + } + server->name_space[volNumber] = dstNS; + *volume = volNumber; + server->m.mounted_vol[1] = 0; + server->m.mounted_vol[0] = 'X'; + return 0; +} + +int +ncp_get_volume_root(struct ncp_server *server, const char *volname, + __u32* volume, __le32* dirent, __le32* dosdirent) +{ + int result; + __u8 volnum; + + DPRINTK("ncp_get_volume_root: looking up vol %s\n", volname); + + ncp_init_request(server); + ncp_add_byte(server, 22); /* Subfunction: Generate dir handle */ + ncp_add_byte(server, 0); /* DOS namespace */ + ncp_add_byte(server, 0); /* reserved */ + ncp_add_byte(server, 0); /* reserved */ + ncp_add_byte(server, 0); /* reserved */ + + ncp_add_byte(server, 0); /* faked volume number */ + ncp_add_dword(server, 0); /* faked dir_base */ + ncp_add_byte(server, 0xff); /* Don't have a dir_base */ + ncp_add_byte(server, 1); /* 1 path component */ + ncp_add_pstring(server, volname); + + if ((result = ncp_request(server, 87)) != 0) { + ncp_unlock_server(server); + return result; + } + *dirent = *dosdirent = ncp_reply_dword(server, 4); + volnum = ncp_reply_byte(server, 8); + ncp_unlock_server(server); + *volume = volnum; + + server->name_space[volnum] = ncp_get_known_namespace(server, volnum); + + DPRINTK("lookup_vol: namespace[%d] = %d\n", + volnum, server->name_space[volnum]); + + return 0; +} + +int +ncp_lookup_volume(struct ncp_server *server, const char *volname, + struct nw_info_struct *target) +{ + int result; + + memset(target, 0, sizeof(*target)); + result = ncp_get_volume_root(server, volname, + &target->volNumber, &target->dirEntNum, &target->DosDirNum); + if (result) { + return result; + } + target->nameLen = strlen(volname); + memcpy(target->entryName, volname, target->nameLen+1); + target->attributes = aDIR; + /* set dates to Jan 1, 1986 00:00 */ + target->creationTime = target->modifyTime = cpu_to_le16(0x0000); + target->creationDate = target->modifyDate = target->lastAccessDate = cpu_to_le16(0x0C21); + target->nfs.mode = 0; + return 0; +} + +int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *server, + struct inode *dir, + const char *path, + __le32 info_mask, + const struct nw_modify_dos_info *info) +{ + __u8 volnum = NCP_FINFO(dir)->volNumber; + __le32 dirent = NCP_FINFO(dir)->dirEntNum; + int result; + + ncp_init_request(server); + ncp_add_byte(server, 7); /* subfunction */ + ncp_add_byte(server, server->name_space[volnum]); + ncp_add_byte(server, 0); /* reserved */ + ncp_add_word(server, cpu_to_le16(0x8006)); /* search attribs: all */ + + ncp_add_dword(server, info_mask); + ncp_add_mem(server, info, sizeof(*info)); + ncp_add_handle_path(server, volnum, dirent, 1, path); + + result = ncp_request(server, 87); + ncp_unlock_server(server); + return result; +} + +int ncp_modify_file_or_subdir_dos_info(struct ncp_server *server, + struct inode *dir, + __le32 info_mask, + const struct nw_modify_dos_info *info) +{ + return ncp_modify_file_or_subdir_dos_info_path(server, dir, NULL, + info_mask, info); +} + +#ifdef CONFIG_NCPFS_NFS_NS +int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent, + __u32 mode, __u32 rdev) + +{ + int result = 0; + + if (server->name_space[volnum] == NW_NS_NFS) { + ncp_init_request(server); + ncp_add_byte(server, 25); /* subfunction */ + ncp_add_byte(server, server->name_space[volnum]); + ncp_add_byte(server, NW_NS_NFS); + ncp_add_byte(server, volnum); + ncp_add_dword(server, dirent); + /* we must always operate on both nlinks and rdev, otherwise + rdev is not set */ + ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); + ncp_add_dword_lh(server, mode); + ncp_add_dword_lh(server, 1); /* nlinks */ + ncp_add_dword_lh(server, rdev); + result = ncp_request(server, 87); + ncp_unlock_server(server); + } + return result; +} +#endif + + +static int +ncp_DeleteNSEntry(struct ncp_server *server, + __u8 have_dir_base, __u8 volnum, __le32 dirent, + char* name, __u8 ns, __le16 attr) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, 8); /* subfunction */ + ncp_add_byte(server, ns); + ncp_add_byte(server, 0); /* reserved */ + ncp_add_word(server, attr); /* search attribs: all */ + ncp_add_handle_path(server, volnum, dirent, have_dir_base, name); + + result = ncp_request(server, 87); + ncp_unlock_server(server); + return result; +} + +int +ncp_del_file_or_subdir2(struct ncp_server *server, + struct dentry *dentry) +{ + struct inode *inode = dentry->d_inode; + __u8 volnum; + __le32 dirent; + + if (!inode) { +#ifdef CONFIG_NCPFS_DEBUGDENTRY + PRINTK("ncpfs: ncpdel2: dentry->d_inode == NULL\n"); +#endif + return 0xFF; /* Any error */ + } + volnum = NCP_FINFO(inode)->volNumber; + dirent = NCP_FINFO(inode)->DosDirNum; + return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); +} + +int +ncp_del_file_or_subdir(struct ncp_server *server, + struct inode *dir, char *name) +{ + __u8 volnum = NCP_FINFO(dir)->volNumber; + __le32 dirent = NCP_FINFO(dir)->dirEntNum; + +#ifdef CONFIG_NCPFS_NFS_NS + if (server->name_space[volnum]==NW_NS_NFS) + { + int result; + + result=ncp_obtain_DOS_dir_base(server, volnum, dirent, name, &dirent); + if (result) return result; + return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); + } + else +#endif /* CONFIG_NCPFS_NFS_NS */ + return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, server->name_space[volnum], cpu_to_le16(0x8006)); +} + +static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6]) +{ + __le16 *dest = (__le16 *) ret; + dest[1] = cpu_to_le16(v0); + dest[2] = cpu_to_le16(v1); + dest[0] = cpu_to_le16(v0 + 1); + return; +} + +/* If both dir and name are NULL, then in target there's already a + looked-up entry that wants to be opened. */ +int ncp_open_create_file_or_subdir(struct ncp_server *server, + struct inode *dir, char *name, + int open_create_mode, + __le32 create_attributes, + __le16 desired_acc_rights, + struct ncp_entry_info *target) +{ + __le16 search_attribs = cpu_to_le16(0x0006); + __u8 volnum; + __le32 dirent; + int result; + + volnum = NCP_FINFO(dir)->volNumber; + dirent = NCP_FINFO(dir)->dirEntNum; + + if ((create_attributes & aDIR) != 0) { + search_attribs |= cpu_to_le16(0x8000); + } + ncp_init_request(server); + ncp_add_byte(server, 1); /* subfunction */ + ncp_add_byte(server, server->name_space[volnum]); + ncp_add_byte(server, open_create_mode); + ncp_add_word(server, search_attribs); + ncp_add_dword(server, RIM_ALL); + ncp_add_dword(server, create_attributes); + /* The desired acc rights seem to be the inherited rights mask + for directories */ + ncp_add_word(server, desired_acc_rights); + ncp_add_handle_path(server, volnum, dirent, 1, name); + + if ((result = ncp_request(server, 87)) != 0) + goto out; + if (!(create_attributes & aDIR)) + target->opened = 1; + + /* in target there's a new finfo to fill */ + ncp_extract_file_info(ncp_reply_data(server, 6), &(target->i)); + target->volume = target->i.volNumber; + ConvertToNWfromDWORD(ncp_reply_le16(server, 0), + ncp_reply_le16(server, 2), + target->file_handle); + + ncp_unlock_server(server); + + (void)ncp_obtain_nfs_info(server, &(target->i)); + return 0; + +out: + ncp_unlock_server(server); + return result; +} + +int +ncp_initialize_search(struct ncp_server *server, struct inode *dir, + struct nw_search_sequence *target) +{ + __u8 volnum = NCP_FINFO(dir)->volNumber; + __le32 dirent = NCP_FINFO(dir)->dirEntNum; + int result; + + ncp_init_request(server); + ncp_add_byte(server, 2); /* subfunction */ + ncp_add_byte(server, server->name_space[volnum]); + ncp_add_byte(server, 0); /* reserved */ + ncp_add_handle_path(server, volnum, dirent, 1, NULL); + + result = ncp_request(server, 87); + if (result) + goto out; + memcpy(target, ncp_reply_data(server, 0), sizeof(*target)); + +out: + ncp_unlock_server(server); + return result; +} + +/* Search for everything */ +int ncp_search_for_file_or_subdir(struct ncp_server *server, + struct nw_search_sequence *seq, + struct nw_info_struct *target) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, 3); /* subfunction */ + ncp_add_byte(server, server->name_space[seq->volNumber]); + ncp_add_byte(server, 0); /* data stream (???) */ + ncp_add_word(server, cpu_to_le16(0x8006)); /* Search attribs */ + ncp_add_dword(server, RIM_ALL); /* return info mask */ + ncp_add_mem(server, seq, 9); +#ifdef CONFIG_NCPFS_NFS_NS + if (server->name_space[seq->volNumber] == NW_NS_NFS) { + ncp_add_byte(server, 0); /* 0 byte pattern */ + } else +#endif + { + ncp_add_byte(server, 2); /* 2 byte pattern */ + ncp_add_byte(server, 0xff); /* following is a wildcard */ + ncp_add_byte(server, '*'); + } + + if ((result = ncp_request(server, 87)) != 0) + goto out; + memcpy(seq, ncp_reply_data(server, 0), sizeof(*seq)); + ncp_extract_file_info(ncp_reply_data(server, 10), target); + + ncp_unlock_server(server); + + result = ncp_obtain_nfs_info(server, target); + return result; + +out: + ncp_unlock_server(server); + return result; +} + +int ncp_search_for_fileset(struct ncp_server *server, + struct nw_search_sequence *seq, + int* more, + int* cnt, + char* buffer, + size_t bufsize, + char** rbuf, + size_t* rsize) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, 20); + ncp_add_byte(server, server->name_space[seq->volNumber]); + ncp_add_byte(server, 0); /* datastream */ + ncp_add_word(server, cpu_to_le16(0x8006)); + ncp_add_dword(server, RIM_ALL); + ncp_add_word(server, cpu_to_le16(32767)); /* max returned items */ + ncp_add_mem(server, seq, 9); +#ifdef CONFIG_NCPFS_NFS_NS + if (server->name_space[seq->volNumber] == NW_NS_NFS) { + ncp_add_byte(server, 0); /* 0 byte pattern */ + } else +#endif + { + ncp_add_byte(server, 2); /* 2 byte pattern */ + ncp_add_byte(server, 0xff); /* following is a wildcard */ + ncp_add_byte(server, '*'); + } + result = ncp_request2(server, 87, buffer, bufsize); + if (result) { + ncp_unlock_server(server); + return result; + } + if (server->ncp_reply_size < 12) { + ncp_unlock_server(server); + return 0xFF; + } + *rsize = server->ncp_reply_size - 12; + ncp_unlock_server(server); + buffer = buffer + sizeof(struct ncp_reply_header); + *rbuf = buffer + 12; + *cnt = WVAL_LH(buffer + 10); + *more = BVAL(buffer + 9); + memcpy(seq, buffer, 9); + return 0; +} + +static int +ncp_RenameNSEntry(struct ncp_server *server, + struct inode *old_dir, char *old_name, __le16 old_type, + struct inode *new_dir, char *new_name) +{ + int result = -EINVAL; + + if ((old_dir == NULL) || (old_name == NULL) || + (new_dir == NULL) || (new_name == NULL)) + goto out; + + ncp_init_request(server); + ncp_add_byte(server, 4); /* subfunction */ + ncp_add_byte(server, server->name_space[NCP_FINFO(old_dir)->volNumber]); + ncp_add_byte(server, 1); /* rename flag */ + ncp_add_word(server, old_type); /* search attributes */ + + /* source Handle Path */ + ncp_add_byte(server, NCP_FINFO(old_dir)->volNumber); + ncp_add_dword(server, NCP_FINFO(old_dir)->dirEntNum); + ncp_add_byte(server, 1); + ncp_add_byte(server, 1); /* 1 source component */ + + /* dest Handle Path */ + ncp_add_byte(server, NCP_FINFO(new_dir)->volNumber); + ncp_add_dword(server, NCP_FINFO(new_dir)->dirEntNum); + ncp_add_byte(server, 1); + ncp_add_byte(server, 1); /* 1 destination component */ + + /* source path string */ + ncp_add_pstring(server, old_name); + /* dest path string */ + ncp_add_pstring(server, new_name); + + result = ncp_request(server, 87); + ncp_unlock_server(server); +out: + return result; +} + +int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, + struct inode *old_dir, char *old_name, + struct inode *new_dir, char *new_name) +{ + int result; + __le16 old_type = cpu_to_le16(0x06); + +/* If somebody can do it atomic, call me... vandrove@vc.cvut.cz */ + result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, + new_dir, new_name); + if (result == 0xFF) /* File Not Found, try directory */ + { + old_type = cpu_to_le16(0x16); + result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, + new_dir, new_name); + } + if (result != 0x92) return result; /* All except NO_FILES_RENAMED */ + result = ncp_del_file_or_subdir(server, new_dir, new_name); + if (result != 0) return -EACCES; + result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, + new_dir, new_name); + return result; +} + + +/* We have to transfer to/from user space */ +int +ncp_read_kernel(struct ncp_server *server, const char *file_id, + __u32 offset, __u16 to_read, char *target, int *bytes_read) +{ + char *source; + int result; + + ncp_init_request(server); + ncp_add_byte(server, 0); + ncp_add_mem(server, file_id, 6); + ncp_add_be32(server, offset); + ncp_add_be16(server, to_read); + + if ((result = ncp_request(server, 72)) != 0) { + goto out; + } + *bytes_read = ncp_reply_be16(server, 0); + source = ncp_reply_data(server, 2 + (offset & 1)); + + memcpy(target, source, *bytes_read); +out: + ncp_unlock_server(server); + return result; +} + +/* There is a problem... egrep and some other silly tools do: + x = mmap(NULL, MAP_PRIVATE, PROT_READ|PROT_WRITE, <ncpfs fd>, 32768); + read(<ncpfs fd>, x, 32768); + Now copying read result by copy_to_user causes pagefault. This pagefault + could not be handled because of server was locked due to read. So we have + to use temporary buffer. So ncp_unlock_server must be done before + copy_to_user (and for write, copy_from_user must be done before + ncp_init_request... same applies for send raw packet ioctl). Because of + file is normally read in bigger chunks, caller provides kmalloced + (vmalloced) chunk of memory with size >= to_read... + */ +int +ncp_read_bounce(struct ncp_server *server, const char *file_id, + __u32 offset, __u16 to_read, char __user *target, int *bytes_read, + void* bounce, __u32 bufsize) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, 0); + ncp_add_mem(server, file_id, 6); + ncp_add_be32(server, offset); + ncp_add_be16(server, to_read); + result = ncp_request2(server, 72, bounce, bufsize); + ncp_unlock_server(server); + if (!result) { + int len = be16_to_cpu(get_unaligned((__be16*)((char*)bounce + + sizeof(struct ncp_reply_header)))); + result = -EIO; + if (len <= to_read) { + char* source; + + source = (char*)bounce + + sizeof(struct ncp_reply_header) + 2 + + (offset & 1); + *bytes_read = len; + result = 0; + if (copy_to_user(target, source, len)) + result = -EFAULT; + } + } + return result; +} + +int +ncp_write_kernel(struct ncp_server *server, const char *file_id, + __u32 offset, __u16 to_write, + const char *source, int *bytes_written) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, 0); + ncp_add_mem(server, file_id, 6); + ncp_add_be32(server, offset); + ncp_add_be16(server, to_write); + ncp_add_mem(server, source, to_write); + + if ((result = ncp_request(server, 73)) == 0) + *bytes_written = to_write; + ncp_unlock_server(server); + return result; +} + +#ifdef CONFIG_NCPFS_IOCTL_LOCKING +int +ncp_LogPhysicalRecord(struct ncp_server *server, const char *file_id, + __u8 locktype, __u32 offset, __u32 length, __u16 timeout) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, locktype); + ncp_add_mem(server, file_id, 6); + ncp_add_be32(server, offset); + ncp_add_be32(server, length); + ncp_add_be16(server, timeout); + + if ((result = ncp_request(server, 0x1A)) != 0) + { + ncp_unlock_server(server); + return result; + } + ncp_unlock_server(server); + return 0; +} + +int +ncp_ClearPhysicalRecord(struct ncp_server *server, const char *file_id, + __u32 offset, __u32 length) +{ + int result; + + ncp_init_request(server); + ncp_add_byte(server, 0); /* who knows... lanalyzer says that */ + ncp_add_mem(server, file_id, 6); + ncp_add_be32(server, offset); + ncp_add_be32(server, length); + + if ((result = ncp_request(server, 0x1E)) != 0) + { + ncp_unlock_server(server); + return result; + } + ncp_unlock_server(server); + return 0; +} +#endif /* CONFIG_NCPFS_IOCTL_LOCKING */ + +#ifdef CONFIG_NCPFS_NLS +/* This are the NLS conversion routines with inspirations and code parts + * from the vfat file system and hints from Petr Vandrovec. + */ + +int +ncp__io2vol(struct ncp_server *server, unsigned char *vname, unsigned int *vlen, + const unsigned char *iname, unsigned int ilen, int cc) +{ + struct nls_table *in = server->nls_io; + struct nls_table *out = server->nls_vol; + unsigned char *vname_start; + unsigned char *vname_end; + const unsigned char *iname_end; + + iname_end = iname + ilen; + vname_start = vname; + vname_end = vname + *vlen - 1; + + while (iname < iname_end) { + int chl; + wchar_t ec; + + if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { + int k; + + k = utf8_mbtowc(&ec, iname, iname_end - iname); + if (k < 0) + return -EINVAL; + iname += k; + } else { + if (*iname == NCP_ESC) { + int k; + + if (iname_end - iname < 5) + goto nospec; + + ec = 0; + for (k = 1; k < 5; k++) { + unsigned char nc; + + nc = iname[k] - '0'; + if (nc >= 10) { + nc -= 'A' - '0' - 10; + if ((nc < 10) || (nc > 15)) { + goto nospec; + } + } + ec = (ec << 4) | nc; + } + iname += 5; + } else { +nospec:; + if ( (chl = in->char2uni(iname, iname_end - iname, &ec)) < 0) + return chl; + iname += chl; + } + } + + /* unitoupper should be here! */ + + chl = out->uni2char(ec, vname, vname_end - vname); + if (chl < 0) + return chl; + + /* this is wrong... */ + if (cc) { + int chi; + + for (chi = 0; chi < chl; chi++){ + vname[chi] = ncp_toupper(out, vname[chi]); + } + } + vname += chl; + } + + *vname = 0; + *vlen = vname - vname_start; + return 0; +} + +int +ncp__vol2io(struct ncp_server *server, unsigned char *iname, unsigned int *ilen, + const unsigned char *vname, unsigned int vlen, int cc) +{ + struct nls_table *in = server->nls_vol; + struct nls_table *out = server->nls_io; + const unsigned char *vname_end; + unsigned char *iname_start; + unsigned char *iname_end; + unsigned char *vname_cc; + int err; + + vname_cc = NULL; + + if (cc) { + int i; + + /* this is wrong! */ + vname_cc = kmalloc(vlen, GFP_KERNEL); + if (!vname_cc) + return -ENOMEM; + for (i = 0; i < vlen; i++) + vname_cc[i] = ncp_tolower(in, vname[i]); + vname = vname_cc; + } + + iname_start = iname; + iname_end = iname + *ilen - 1; + vname_end = vname + vlen; + + while (vname < vname_end) { + wchar_t ec; + int chl; + + if ( (chl = in->char2uni(vname, vname_end - vname, &ec)) < 0) { + err = chl; + goto quit; + } + vname += chl; + + /* unitolower should be here! */ + + if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { + int k; + + k = utf8_wctomb(iname, ec, iname_end - iname); + if (k < 0) { + err = -ENAMETOOLONG; + goto quit; + } + iname += k; + } else { + if ( (chl = out->uni2char(ec, iname, iname_end - iname)) >= 0) { + iname += chl; + } else { + int k; + + if (iname_end - iname < 5) { + err = -ENAMETOOLONG; + goto quit; + } + *iname = NCP_ESC; + for (k = 4; k > 0; k--) { + unsigned char v; + + v = (ec & 0xF) + '0'; + if (v > '9') { + v += 'A' - '9' - 1; + } + iname[k] = v; + ec >>= 4; + } + iname += 5; + } + } + } + + *iname = 0; + *ilen = iname - iname_start; + err = 0; +quit:; + if (cc) + kfree(vname_cc); + return err; +} + +#else + +int +ncp__io2vol(unsigned char *vname, unsigned int *vlen, + const unsigned char *iname, unsigned int ilen, int cc) +{ + int i; + + if (*vlen <= ilen) + return -ENAMETOOLONG; + + if (cc) + for (i = 0; i < ilen; i++) { + *vname = toupper(*iname); + vname++; + iname++; + } + else { + memmove(vname, iname, ilen); + vname += ilen; + } + + *vlen = ilen; + *vname = 0; + return 0; +} + +int +ncp__vol2io(unsigned char *iname, unsigned int *ilen, + const unsigned char *vname, unsigned int vlen, int cc) +{ + int i; + + if (*ilen <= vlen) + return -ENAMETOOLONG; + + if (cc) + for (i = 0; i < vlen; i++) { + *iname = tolower(*vname); + iname++; + vname++; + } + else { + memmove(iname, vname, vlen); + iname += vlen; + } + + *ilen = vlen; + *iname = 0; + return 0; +} + +#endif |